@option style:legacy, short_colors:no;
// DEVIATION: We preserve the same type of quotes when interpolating.  Ruby
// always produces double quotes.
a {
  $a: 'a';
  $b: 'b';
  $c: 'c';
  $x: '';
  A: $a$b$x$c;
  B: '$a$b$x$c';
  C: "$a$b$x$c";
  D: #{$a}#{$b}#{$x}#{$c};
  E: '#{$a}#{$b}#{$x}#{$c}';
  F: "#{$a}#{$b}#{$x}#{$c}";
}

b {
  $a: "a";
  $b: "b";
  $c: "c";
  $x: "";
  A: $a$b$x$c;
  B: '$a$b$x$c';
  C: "$a$b$x$c";
  D: #{$a}#{$b}#{$x}#{$c};
  E: '#{$a}#{$b}#{$x}#{$c}';
  F: "#{$a}#{$b}#{$x}#{$c}";
}
